TaxNo: 5126Family Pleuronodoceratidae
| Suborder: |
Paraceltitina
|
| Superfamily: |
Xenodiscoidea
|
| Family: | Pleuronodoceratidae |
| Qualifier: | fa |
| Author: |
Zhao et al. 1978,p.142
|
| Lower Boundary: |
Pseudosteph./Tap.--Pseudotir./Pleuron., 252.5 million years
|
| Upper Boundary: |
Permian--Triassic (Induan base), 251 million years
|